Y=-2x+2
y = 7x +11
solve systems by substitution

(-1,4)

Step-by-step explanation:

y=-2x+2                                    y=7x+11 < substitute this equation for y in the            

                                                                       equation y=-2x+2

7x+11=-2x+2              Add 2x to both sides

9x+11=2                     Subtract 11 from both sides

9x=-9                         Divide both sides by 9

x=-1

y=-2(-1)+2                   Plug in x to one of the equations, I chose y=-2x+2            

y=2+2                         because it was the easiest, then solve

y=4

Solution is (-1,4)

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true