Linear Equations & Functions Flashcards
7 cards from real REGENTS-ALGEBRA practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Linear Equations & Functions flashcards as text
Which equation is written in standard form?
Answer: 3x - y = 2
Standard form is Ax + By = C; 3x - y = 2 fits this format.
A function f is defined by f(x) = 5x - 3. What is f(4)?
Answer: 17
f(4) = 5(4) - 3 = 20 - 3 = 17.
What is the slope of a line perpendicular to y = (1/3)x + 4?
Answer: -3
Perpendicular slopes are negative reciprocals; the negative reciprocal of 1/3 is -3.
James earns $12 per hour. Which equation models his total earnings E after h hours?
Answer: E = 12h
Total earnings equal the hourly rate multiplied by hours worked: E = 12h.
Which point lies on the line y = -x + 6?
Answer: (3, 3)
Substituting x = 3: y = -3 + 6 = 3, so (3, 3) satisfies the equation.
What is the rate of change of the linear function represented by the table: x: 1, 2, 3, 4 and y: 5, 8, 11, 14?
Answer: 3
Each time x increases by 1, y increases by 3, so the rate of change (slope) is 3.
The equation of a line passing through (0, -4) with slope 2 is:
Answer: y = 2x - 4
The point (0, -4) is the y-intercept (b = -4) and slope m = 2, giving y = 2x - 4.