Question Progress Exam Paper Progress
50 / 80 Marks
Grade For This Paper
U 1 2 3
4
5
7%
/
P and Q are points on the line y = 2 - 4x
10
a) Complete the coordinates of P and Q.
8
P(0,
Q
,0)
(2)
b) Plot points P and Q on the graph.
Use the xt tool to plot the coordinates.
(1)
3
-2
41
O
2
c) Draw the line y = 2 - 4x for values of x
from-2 to 2
(1)
Total marks: 4
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step-by-step explanation:

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this