Question

pic below please help me. @Preetha @Phi

Answer 1

@Lady.Liv1776 @Lilmike234 @mathstudent55 anyone please help

Answer 2

y-intercept is where the line crosses the y-axis (the vertical axis)
any idea where the line crosses the y-axis?

Answer 3

about 3

Answer 4

yes. so 3 matches after how much practice ?

Answer 5

0 practice

Answer 6

so that is the answer to part A (if you make that into a coherent thought)

Answer 7

if they don't practice, we expect them to win only about 3 matches.

Answer 8

for part B you want
y = mx + b
we need m and b

from part A we know b

to find m (the slope)
look at x=4 (get its y value)
and at x= 7 (ditto)
what two points do you read off the line?

Answer 9

10 and 16

Answer 10

ok, those are the y values. you want to write the two points as
(4,10) and (7,16)

now find the slope
which is change in y divided by change in x
can you do that ?

Answer 11

is it 1/2

Answer 12

what is the change in y ?

Answer 13

in other words, what is 16- 10 ?

Answer 14

3?

Answer 15

remember y is the 2nd number in each pair (or the height of the point above the x-axis)

change in x is 7-4 = 3

so the slope is 6/3 = 2

ok?

Answer 16

your equation is
y= 2x+3

Answer 17

ok that makes sense. sorry if I seemed dumb there I just didn't remember that y is the second number in each pair

Answer 18

the last part is to "put in" 13 for x in the equation and then calculate y

Answer 19

did you do
y = 2*13+3 ?
for the last part.
you get
29 matches

Answer 20

yes I did do that. thank you soooo much @phi i really appreciate it..

Answer 21

for part B, they ask what the number of matches you will win if you practice 13 months
that is why we use x=13