Algebra 1 Practice Test: answer key

Every answer, with a link to its step-by-step solution

#	Answer	Lesson	Solution
1	15	Evaluate expressions	Solved step by step
2	2n − 3	Words to expressions	Solved step by step
3	A Yes	Equivalent expressions	Solved step by step
4	D n = 2	Linear equations	Solved step by step
5	5	Find an expression without solving	Solved step by step
6	y = 30	Direct and inverse variation	Solved step by step
7	x = −qp − r	Changing the subject when it appears twice	Solved step by step
8	x < 9	Inequalities	Solved step by step
9	x > 4	Compound inequalities with and / or	Solved step by step
10	D x = 2	\|u\| = \|v\| equations	Solved step by step
11	16 units	Polygons on the grid	Solved step by step
12	A Linear	Linear or not	Solved step by step
13	20 km/h	Distance-time graphs	Solved step by step
14	y = 3	Equation of a line through two points	Solved step by step
15	A Is a solution	Checking a solution	Solved step by step
16	A (x, y) = (−2, 5)	Solving by substitution	Solved step by step
17	k = 6	Find k	Solved step by step
18	1 × 10³	Scientific notation	Solved step by step
19	3x² − 6x	Polynomials	Solved step by step
20	(x − 2)(x + 5)	Factoring	Solved step by step
21	3(x + 2)(x² − 2x + 4)	Sum and difference of cubes	Solved step by step
22	C x = 0 or x = −4 or x = 4	Solving by factoring	Solved step by step
23	6√5	Simplifying square roots	Solved step by step
24	12	Dividing square roots	Solved step by step
25	2	Higher roots	Solved step by step
26	1 + √7	Rationalising a two-term bottom with its partner	Solved step by step
27	x = 8 or x = 2	Completing the square	Solved step by step
28	C x = 7 or x = −2	Completing the square with fractions	Solved step by step
29	x = 1 or x = −3	Choosing a method	Solved step by step
30	k = 8 or k = −8	Find c	Solved step by step
31	y = −2x + 10	Linear or exponential	Solved step by step
32	x = 16	Word problems part 1	Solved step by step
33	x = 12	Coin problems	Solved step by step
34	B x = 4	Work-rate	Solved step by step
35	x ≤ 4	Word inequalities	Solved step by step
36	x = 3	Simple interest	Solved step by step
37	A x = 5	Tickets with a link	Solved step by step
38	85	Two things, one total	Solved step by step
39	y = 2x − 3	Write Ax + By = C as y = mx + b	Solved step by step
40	y = −12x + 4	Parallel and perpendicular lines	Solved step by step

Grade

Count your right answers and divide by the number of questions: A 90% or more, B 80%, C 70%, D 60%, F below 60%.