5 exercises · 4 automatically checked · 1 written self-check · Untimed
4 questions · Shuffled order · Untimed practice
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Find the slope through (−2, −3) and (4, 9).
Enter an integer, decimal or fraction without units. Use up to 5 characters, or 6 including a leading minus.
2. The slope is (9 − (−3))/(4 − (−2)) = 12/6 = 2. Both coordinate differences use the same point order.
Find the y-intercept of 5x − 2y = 14.
Enter an integer, decimal or fraction without units. Use up to 5 characters, or 6 including a leading minus.
−7. Set x
What is the slope of a line perpendicular to a line with slope 4/5?
Enter an integer, decimal or fraction without units. Use up to 5 characters, or 6 including a leading minus.
−5/4. The negative reciprocal of 4/5 is −5/4. Their product is −1.
For 2x + 5y = 50, x increases by 5 while the equation remains true. Find the signed change in y.
Enter an integer, decimal or fraction without units. Use up to 5 characters, or 6 including a leading minus.
−2. Changes satisfy 2Δx + 5Δy
Review Linear equations in two variables
Write your complete response before opening the model answer. Compare both your answer and your reasoning.
Write the line through (1, 4) parallel to 3x + y = 9.
y