Rosa spent half of her weekly allowance “a” on an outfit. She also spent $7 on a book. She now has $18 left of her weekly allowance. Write and solve an equation to find Rosa’s weekly allowance.

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step-by-step explanation:

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step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4