Where the error occurs

Step 1 4x + 5y = -10
2x - 4y = 9
Step 2 (Multiply by 2.)
4x + 5y = -10
4x – 8y = 18
Step 3 -3y = 8
y = 2

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Find the slope of a line given the following two points

The description below represents function a and the table represents function b: function a the function is 5 more than 3 times x. function b x y −1 2 0 5 1 8 which statement is correct about the slope and y-intercept of the two functions? (1 point) their slopes are equal but y-intercepts are not equal. their slopes are not equal but y-intercepts are equal. both slopes and y intercepts are equal. neither slopes nor y-intercepts are equal.