Answer:
y=-x
Step-by-step explanation:
Plug (-2,2) for y= mx+b (2=m(-2) + b)
Plug (2,-2) for y=mx +b (-2=m(2) +b)
Causing them to turn into a system of equations for y= -x
Answer:
Step-by-step explanation:
418 to the nearest ten is 420
384 to the nearest ten is 380
1273 to the nearest ten is 1270
1270-(420+380)=1270-800=470 miles
Answer:
x=24
Step-by-step explanation:
x/2+3=15
-3 both sides
x/2=15−3
15-3=12
x/2=12
12*2=24
x=24
Answer:
(2,2)
Step-by-step explanation:
Given equations
x-3y=-4-------------------------------(1)
y=-3x+8.------------------------------(2)
Substitute 2 in 1. This means use the value of y in equation 1, to replace y
x-3(-3x+8)=-4------------------open brackets
x+9x-24=-4---------------------collect like terms
10x=-4+24
10x=20---------------------------divide by 10 both sides to get value of x
10x/10=20/10=2
x=2------------------------------use value of x in equation (2) to get value of y
y=-3x+8
y=-3(2)+8
y=-6+8=2
solutions
x=2, y=2
