Linear Equations
x + 8 = 24
16 + 8 = 24
16
Jenny is selling Oreo cookie bars for $2.00. She wants to purchase a new bike. The bike is approximately $200. How many bars does she need to sell to reach her goal?
100 bars.
Substitute x for 2
4x - 1?
7
Solve where a = 3 and b = 4
3a + 2b
17
Term number Term
1 7
2 10
3 13
4 16
3x + 4
3b + 24 = 51
3 (9) + 24 = 51
9
Sarah is driving 110 km/h to her cottage just outside of Sudbury. The destination is 330 kilometres away. How long till she reaches her destination?
3 hours.
Substitute x for 3
3x - 9
0
Solve where a = 6 and b = 3
12 - 1a + 3b
15
Term number Term
1 8
2 11
3 14
4 17
3x + 5
2a + 3 - 2 = 9
2(4) + 3 -2 = 9
4
Emely wants to sell ice cream bars, she would like to sell them for $4.00 each.
She wants to know, how much money would she make if she sold 8 bars?
$32.00
Substitute x for 3
4x - 3
9
Solve where a = 10 and b =7
7a
70
Term number Term
1 9
2 14
3 19
4 24
5x + 4
13 = 1x + 3
13 = 1(10) +3
10
Lilah is selling lemonade on the side of the road for $3.00. She wants to save up for a toy that is $42.00, how many lemonades does she need to sell ?
14
Substitute x for 5
6x - 1
29
Solve where a = 7 and b = 6
4 (b-2) + 2a
30
Term number Term
1 7
2 13
3 19
4 25
6 x + 1
21 = 7x
21 = 7(3)
3
Using a graph ;
Jeremy is driving 120 km/h, he is driving to Kanata. He needs to drive approximately 600 kilometres. How many hours till Jeremy arrives to Kanata?
5 hours
substitue x for 5
7x + 3
38
Solve where a = 7 and b = 2
3 (a + 2 - 3b)
9
Term number Term
1 2
2 6
3 10
4 14
4x - 2