Recognize that the triangle is isosceles, so the two side lengths are equal.
b = 2√2
Recognize it is a right triangle, so you can use the Pythagorean theorem to compute the length of "a".
a^2 = (2√2)^2 +(2√2)^2
a^2 = 8 +8 = 16
a = √16
a = 4
If 2-4=20 than x is equal to 12
4 is on the y-intercept. the y axis is vertical and the x axis is horizontal.
If a= -2, we plug -2 in replacement of a.
7(-2) + 3 = ?
Multiply before adding.
-14 + 3.
-11 is the answer for A.
If y= -8, we plug in -8 in replacement for y.
-3 x -8 (multiplying two negatives makes a positive).
-24 -(9) = ?
Subtracting a negative from a negative is basically adding to the negative.
-33 is the answer for Y.
I hope this helps!
