Download 3.2B CONVERTING STANDARD FORM

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 Warm-up
 Correct 3.2HW
 3.1 to 3.2B HW Quiz
 3.2B Notes
 Assignment: 3.2B Worksheet
 3.1 to 3.2B Quiz tomorrow
Write an equation for the line.
a) Slope is ¾ and y-intercept is –7
y
3
x7
4
b) Slope is –2, and y-intercept is 9
y  2 x  9
Graph the equation of the line.
y  2x  5
1
1) y = 0.5x – 3
2) y = 3x + 4
3) y = 0x + 5 or y = 5
4) y = x + 1
5) y = -2x - 4
 Take 3-4 minutes to complete the 4 questions.
 You may use your notes and homework if needed.
 You may use a calculator.
 Turn into Mrs. Rose when finished.
 Sit quietly until all quizzes are turned in.
 This does NOT count as a Quiz grade!
I CAN . . .
~convert standard form equations into
slope-intercept form.
STANDARD FORM
Ax + By = C
A, B, C are numbers
SLOPE-INTERCEPT FORM
V S.
y = mx + b
m and b are numbers
Example
Example
3x + 6y = 12
y = –2x + 5
Step 1: _________________________
to the other side.
Add or Subtract to get “x”
Step 2: ___________________________
to get y by itself.
Divide by number in front of y
Convert each equation into slope-intercept form.
a)
3 x  4 y  12
–3x
–3x
4 y  3 x  12
4
4
4
3
y   x3
4
b)
2 x  5 y  10
–2x
–2x
 5 y  2 x  10
–5
–5
–5
2
y  x2
5
Convert each equation into slope-intercept form.
a)
3 x  y  6
–3x
–3x
b)
 3 x  5 y  8
+3x
+3x
 y  3 x  6
5 y  3x  8
–1
5
–1
–1
y  3x  6
5
5
3
8
y  x
5
5
Convert the equation into slope-intercept form and graph it.
3 x  5 y  20
–3x
–3x
5 y  3 x  20
5
5
5
3
y  x4
5
Convert the equation into slope-intercept form and graph it.
4 x  2 y  12
–4x
–4x
 2 y  4 x  12
–2
–2
–2
y  2x  6
Convert the equation into slope-intercept form and graph it.
2 x  3 y  9
–2x
–2x
 3 y  2 x  9
–3
–3 –3
2
y  x3
3
3.2B Worksheet
3.1 to 3.2B Quiz tomorrow!