3 years ago

I need help with these because recently we have been learning this and I don't get any of this.

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

5 0

It is upside down, can't see it properly!

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The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

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We have the system of equations:

$\left\{\begin{array}{ccc}y=-4x+10&(1)\\y=-3x+2&(2)\end{array}\right\\\\\text{Put (1) to (2):}\\\\-4x+10=-3x+2\qquad\text{subtract 10 from both sides}\\-4x=-3x-8\qquad\text{add 3x to both sides}\\-x=-8\qquad\text{change the signs}\\x=8\\\\\text{Put the value of x to (2):}\\\\y=-3(8)+2\\y=-24+2\\y=-22$