Re-Writing Equations Part of end of class

4x + 2y = 6 If an equation is not in slope-intercept form, we must first solve the equation for y. 1)Add or subtract 2)Multiply or divide

Y = 3 – 2x How do we identify the slope? How do we identify the y-intercept?

4y + 12x = 16

25x – 5y = 30

Slope Positive/Negative/Zero/Undefined

Positive/Negative Slope Positive – Goes up from the left to the right. – Negative – Goes down from left to right –

Horizontal Think “hoy” – “h” – horizontal line – “o” – zero slope – “y” – equation is of the form y =

Undefined Think “vunx” – “v” – vertical line – “un” – undefined slope – “x” – equation is of the form x =