SAT Math Question of the Day

Math Category: Geometric Slope:

Q: The y-intercept of the line 2/3y = 3(x + 4) is

  1. 1/2
  2. 2/3
  3. 3
  4. 9/2
  5. 18

UNANSWERED.

The correct answer is E.

A: The answer is 18.
First solve for y.
2/3y = 3(x + 4)
2/3y = 3x + 12
y = 9/2x + 18
The line is now in the y = mx + b format. m is the slope of the line and b is the y-intercept. b is 18, so that's the y-intercept of the line.