Multiply the second equation by 3
-4x+9y=9
3x-9y=-18
add the equations together
-x=-9 Simplify
x=9
now plug in your x value
(9)-3y=-6 Simplify
-3y=-6-9
-3y=-15
y=5
Answer:
You can travel 630 miles.
Step-by-step explanation:
317.5 - 160 = 157.5
157.5 / .25 = 630
81.28
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Answer:
y = x - 2
Step-by-step explanation:
Slope intercept form is: y = mx + b, where m is the slope and b is the y- intercept. In this question, we are given everything, and all we need to do is rearrange the terms.
-x + y = -2
Add x to both sides
y = x - 2
In this equation, the slope is 1 and the y intercept is -2.