Answer:
I think the circles would be cut into eighths then.
Step-by-step explanation:
I hope this helps you! :D
Answer:
x-intercept is x = -4; y-intercept is y = -2
Step-by-step explanation:
1.
The zero or x-intercept is when the line touches the x-axis or horizontal line axis or is when y = 0.
x = -4
2.
The y-intercept is when the line touches the y-axis or vertical line axis or is when x = 0.
y = -2
We must to remember what is the standard form of equation of straight line. It looks like that:
Ax+By+C=0. A,B and C it's coefcients; x and y - it's variables.A and B must not be equal to zero at same time.This condition can be writen like this: (A^2+B^2) not equal to zero.
We know that x=2 ("after two hours") and y=15 ("velocity of the cyclist is 15 km/h")
AND
x=5 ("after five hours") and y=12 ("velocity of the cyclist is 12 km/h").
Lets look at standart form and give the values on variables.1. 2A+15B+C=0
2. 5A+12B+C=0and it is system.let's subtract the bottom equation from the top -3A+3B=03A=3BA=B.So we can choose any value for A and B, just A=B.I choose for A=B=1.Our equation takes the formx+y+C=0
x+y=-C
and if we giving the value to variables, we can find coefficients "C".
5+12=-CC=-17.
Standart form is:x+y-17=0. ---- answer for Part A.
and the graph of this function is a straight line.For find the answer to Part B, we need to prolong our straight line into the perpendicular vertical line wich contain x=12.
In the point of the intersection of the lines, you must to turn at right angle to axis OY and to come at the value in the axis OY, it's will be the velocity after 12 hours.
Well one way to think of this since the equation is going through the origin is to recognize this linear function as proportional and can be represented by y = kx.. Where 'k' represents the constant of proportionality. We can find the constant of proportionality by asking ourselves what can we multiply the x coordinate by to get the y coordinate for each point on the line? Consider the point (1, n) You can see the constant of proportionality would be 'n' and our equation would then be y = nx
