Answer:
x=5,y=-2 or (5,-2)
Step-by-step explanation:
Here is the system of equations:
2x+y=8
y=x-7
Since we have y isolated by itself in the second equation, let's use substitution.
Substitute x-7 as y into the first equation
2x+x-7=8
combine like terms
3x-7=8
add 7 to both sides
3x=15
divide by 3
x=5
now substitute 5 as x into one of the equations to find the value of y
for example let's use y=x-7
y=5-7
y=-2
so x=5, y=-2
as a point it's (5,-2)
Hope this helps! :)
x=5 y=-2 (5,-2)
2x+x-7+8
for y
y=-2x+8
y=-2(5)+8
y=-10=8
3- 3, 6, 9, 12, 15, 18, 21, 24, 27, 30
4- 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
7- 7, 14, 21, 28, 35, 42, 49, 56, 63, 70
HOPE IT HELPED
Draw a vertical line at the number 4 on your x axis positive side which is x=4
Then anything on the left of this line you just created at x=4 will be less than 4. But since your inequality is x less than/equal to 4 it includes 4 as well.
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