Experience the Quality With Free ACT Exam Questions That Helps Candidates Pass

Parallel lines have the same slope. Given slope is -3, so slope of parallel line = -3. Choice A is correct. Choice B is perpendicular slope’s sign flip. C and D are reciprocals. On ACT Math, parallel = same slope; perpendicular = negative reciprocal.

Data: more light = higher photosynthesis. Choice A matches. B–D contradict. ACT Science often presents simple direct trends—always check dependent vs. independent variables.

The question provides average growth values with equal intensity across color treatments (stated explicitly: “lights of equal intensity”). Blue shows 7.3 cm, white 7.0 cm, red 6.1 cm, and green 3.2 cm. The student predicted blue would produce the most growth, and blue indeed has the highest mean. Therefore, the hypothesis is supported (Choice A). Choice B is incorrect because green has the lowest growth. Choice C is wrong since red’s 6.1 cm is less than both blue and white. Choice D claims intensity was not controlled, but the passage states the lights were of “equal intensity,” which is a control variable, so the hypothesis can be evaluated. On ACT Science, identify the relevant variables (color as independent, growth as dependent), check that controls are present (equal intensity, same duration, identical seedlings), and compare numerical results directly to the prediction. Since blue’s mean is the largest, the data align with the hypothesis; minor differences (e.g., blue vs. white) do not negate that support unless statistical testing or error bars suggest otherwise, which are not provided here.

Blue light produced the highest rate (20). Red was close (18). Green was much lower (5). Therefore, blue is most effective. Choice B is correct. A and D contradict evidence. C is false because red > green. ACT Science questions often involve comparing bar graph or table values.

The data show blue light produced 12 cm growth, higher than red (8 cm) and yellow (5 cm). Thus, Choice A is correct. Choice B, C, and D are inconsistent with numbers. ACT Science favors direct data reading. The best strategy: identify independent variable (light color) and dependent variable (growth), then compare numerical values directly.