Step-by-step explanation:
I'll do line A for you and you can use the formulas to solve lines B and C yourself, since its good for you to practice doing these questions yourself
a)
The gradient, m, is calculated using m = (y2-y1)/(x2-x1) where x1,x2,y1 and y2 can be any ordered pairs on the line. I'm going to use (4,0) and (7,3) as the 2 points.
m = (3-0)/(7-4) = 3/3 = 1
b)
The y-intercept is where the line intersects with the x-axis. In this case (0,-4)
c)
The equation of a linear line is y=mx+b (or c depending on which country you are from)
y = 1x-4
y=x-4
Now try the other 2 lines yourself!
If this answer has helped you, considered making this the brainliest answer!
Catalyst is a substance that speeds up the rate of any chemical reaction but they do not take part in the reaction.
<h3>What is a catalyst</h3>
Catalyst is a substance that speeds up the rate of any chemical reaction but they do not take part in the reaction.
Catalysis is the process of increasing the rate of a chemical reaction by the addition of a substance known as a catalyst.
Catalysts are known not to be consumed in the reaction and remain unchanged at the end of a reaction
Learn more on catalyst here: brainly.com/question/12507566
The correct statements about similarity of triangles are A, B, and C.
<h3>
What is a similar triangle?</h3>
Similar triangles are triangles that have the same shape, but their sizes may vary. This type of triangles are said to have congruent angles and corresponding sides.
From the given figure,
- triangle ABC is a right triangle and triangle BDC is also a right triangle
- triangle ABC is a right triangle and triangle ADB is also a right triangle
- angle ABD is 45 and angle BCD is also 45 degrees.
Thus, the correct statements about similarity of triangles are A, B, and C.
Learn more about similar triangles here: brainly.com/question/2644832
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One team will have 8 kids and one team will have 9 kids
