Graph each equation using slope and y-intercept
Name _____________________________
Class example: Two cars are traveling along a highway in the same direction. They take x hours to travel y miles from point A on the highway. Their motions are described by the equations
y = 60x
y = 50x + 20
Graph the lines below.
For you to try:
p. 222 Guided Practice #4
Oven 1: T = t + 200
Oven 2: T = 2t + 80
time t (seconds)
Now do p. 224 #13
Cyclist 1: d = 10t
Cyclist 2: d – 8t = 2
time x (hours)
When will the cars meet? ______
How many miles will they
have driven when they meet? ______
When will the temperatures
of the ovens be the same? _______
How many minutes is that? _______
What will the
temperature be? _______
time t (hours)
When did they meet? ________
How far away from
point A did they meet? ________
Review: Remember to solve for y first!
1. y – x = 3 x + y = -1 2. 2x + y = 7 y – 3x = -3 3. x + y = 6 2x + y = 8
Solution: (_____, _____) Solution: (_____, _____) Solution: (_____, _____)
Check: Check: Check:
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