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# how can I find the equation of a line that passes through (-4,-8) and has undefined slope?

The topic of this problem is "Use the Point-slope Equation of a line.

# Teacher just gave us answer... Not enough practice

I have a test today and here are a few questions I have the answers to but I don't know how the teacher got there. He takes too long teaching one problem that at the end leaves us confused. Please...

# Finding y-intercept

The slope is -3, the y is 3, and the x is negative 1. So the equation would be 3= (-3)(-1) + b. 3 = (-3)(-1) + b -3 = -3 + b 0 = b Is this correct?

# Find an equation of a line

Find an equation of the line. Write the equation using function notation. (Show all work)   Through (2,-5);perpendicular to 9y=x-18

(4,6) and (8,4)

# What dose y =

Anthony is running for class president and wants to hang posters in the halls at school. The local print shop charges a set up fee of 15.00 dollars and 3.50 dollars per poster. Find the equation,...