L4-5, Writing Equations In Point-Slope Form printable pdf download

L4-5, Writing Equations In Point-Slope Form

Standard 7.0 Student verify that a point lies

on a line, given an equation of the line.

Students are able to derive linear equations

by using the point-slope formula.

L4-5, Writing Equations in Point-Slope Form

So far, we know TWO forms of a linear equation…

Standard Form

Slope-Intercept Form

There’s one more form, you need to know…

Point-Slope Form

y - ____ = ____ (x - ____ )

_____________________

_____________

***It is imperative that you notice the MINUS signs!***

Write an equation given slope and a point

Write the point-slope form of an equation for the

Write the point-slope form of an equation

line that passes through (1 -5) with slope -3.

for the line that passes through (1, -4)

with the slope -2.

1. Determine: m = _____; (x

, y

) = (___, ____)

2. Write the point-slope form:

3. Replace m and (x

, y

) with values.

4. Simplify.

Same as Pg 219 example 1

Changing the forms of a linear equation

Write y – 1 = 7(x + 5) in standard form.

Write y – 1 = 7(x + 5) in slope-intercept form

1. Distribute the 7.

2. Get x and y on the same side of the =.

2. Get y by itself.

(Hint: Make sure x is first)

≥0, so multiply each side by -1

3. The rule is A

Similar to Pg 221 example 4

Similar to Pg 221 example 5

L4-5, Writing Equations In Point-Slope Form