Question

LOOK AT CHART BEFORE THE BULLET PART:

● Suppose Sal’s total profit on lunch specials for next month is $1596. The profit amounts are the same: $3 for each sandwich and $4 for each wrap. Fill in the empty boxes above with the correct information.

Show your work:

Answer 1

• m = -3/4
• y-intercept = 399
• slope-intercept equation: y = -3/4x + 399

Explanation:

It can be easiest simply to solve the equation for y.

3x + 4y = 1596

4y = -3x + 1596 . . . . subtract 3x

y = -3/4x + 399 . . . . divide by 4

From this equation in slope-intercept form you can read the slope as -3/4 and the y-intercept as 399. You already know the equation.