Using the x,y format where does the graph of 3x+3 and -5×+7 intersect

Mathematics

2 answers:

IRINA_888 [86]2 years ago

8 0

Not sure if I'm right but I believe they intersect at (1,4).

denis-greek [22]2 years ago

5 0

Assuming they equal y

y=3x+3
y=-5x+7
set eqal to each other since both equal y
3x+3=-5x+7
add 5x both sides
8x+3=7
minus 3 both sides
8x=4
divide by 8 both sides
x=1/2
sub back

3x+3=y
3(1/2)+3=y
1.5+3=y
4.5=y
9/2=y

x=1/2
y=9/2
(1/2,9/2) is soltuion

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